Routes
Build a transfer buffer you can explain
A transfer buffer should cover identifiable tasks, not simply a round number added to the timetable.
The nearest point on a map may sit on the wrong side of a station.
A neighbourhood loop needs an understandable way home as well as an appealing outward route.
The return trip begins with leaving the final activity, not with arriving at the airport or station.
A long route is easier to judge when it has a useful intermediate stop.